Scroll to see break-even price per barrel for oil in 2015 for select oil producers, and click on a country's name for more details. modest oil-price recovery and currency devaluations have lowered breakeven prices for countries like Russia and Nigeria, but some petrostates still need oil prices above $100 a barrel to balance their budgets.
There are dozens of types of gemstones â including diamonds, colored gemstones, and pearls â each with a unique set of physical and optical properties. GIRDLE â The narrow band around the perimeter of a polished or faceted diamond or colored gemstone.
Diamonds & Gemstones Conversion Charts. Convert from milimeter measurement the carat weight of round cut diamonds to know the approximate carat weight or carat weight equivelent. The weights listed below for diamonds are averages only and based on their specific gravity. Stones that have a very deep or very shallow cut or a higher or lower specific gravity will vary from these estimated carat weights.